Dual bottle unit



FIG. 1 is a front perspective view of a dual bottle unit showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof, the left side elevational view is the same;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear perspective view of one of the bottles shown separately for clarity of illustration; and,

FIG. 7 is a rear elevation of FIG. 6. 

The ornamental design for a dual bottle unit, as shown and described. 